Burglarproof window lock



Aug. 28, 1923.

1,466,586 H. HEYER BURGLARPROOF WINDOW LOCK Filed Nov. 2 1921 '3 Sheets-Sheet 1 INVENTOR ATTORNEY Aug. 28, 1923. 1,466,586

' H. HEYER BURGLARPROOF WINDOW LOCK Filed 28 1921 3 Sheets-Sheet 2 ATTORNEY 7 Aug. 28, 1923*.

1.466.586 H. HEYER BURGLARPROOF WINDOW LOCK Filed Nov. 28. 192-1 3 Sheets-Sheet 3 INVENTOR ATTORNEY Pleas Aug.23,' 192s.

messes util se. sra'rss PATENT IQZFFIFCQEJA HERMAN HEYER, or ossin n fnnw YORK.

BoReLi-isrnoor winnow LOCK.

" hpplication iiiled November 28 1921. Serial No. 518,390. I

T all whom it may concern; I 7

Be it known that I, HERMAN Harlin, a

Ossining, NewYork, have invented certain new and useful Improvements in Burglarproof lVindow Locks, of which the following is a specification.

This inventionrelates to locks'or latches for windows andits object is'to provide a lock whichis burglar proof, one which will lock the window in either closed or any adjusted position, the looking or unlocking action OfJWlllCh maybe temporarily sus pended.

The invention consists'essenti ally of a latch having amain bolt engaging a rack or series of projections on the window' to be locked, with a supplemental bolt controlling the locking and: unlocking of the mainbolt whereby the main bolt is maintained in either withdrawn or extended position. To this may be added either or both automatic or manually operable means for operating the supplemental bolt. Finally there is provided means operable by change of direction of the window to be locked for extending the bolt into locked position; I 1 p g l have herein described one form of my invention which is the" best embodiment thereof of which I am at present informed, but it is to be understood that this embodiment is shown in an illustrativesense only and not a limiting one, for obviously my invention is capable of many differentembodiments without departing spirit or scope thereof. p The embodiment chosen for illustration is shown in the accompanying drawings in which: a h

Figure 1 shows a perspective view of one of my latches in use on the left hand side of a window although I ordinarily use it on the right hand side. i

I from the Figure 2 is a side elevation of ,my latch detent.

. hand use.

FigureSiS-a perspective view of the r main bolt looking down on its top. citizen, of the United States, residing at Figurel) is a longitudinal vertical sectiona-l view through the latch showing the supplemental boltand detent-loclring the 'main bolt in locked position.

'F'gur'e 10 Shows a detail of guard plate. Figure .11 is a perspective view of the the extending supplemental bolt looking from its rear end down on its top.. r Figure 12 shows a perspective detail of the trip p Z V I I F gure-"13 is a viewsiniilar to Figure 9 except that the rack has caused the supplemental bolt to be moved inwardly or t'o'be retracted, whereby the detent is permitted to fall and release the main'ibolt from looking or extendedposition.

Figure. 14 is a longitudinal sectional view taken along the line l4f14 in Figure 3.

Figure-15 shows a detail. Figure 16 is aperspective View of the My latch or look can be placed at either the right or left hand side of the window to be locked, so it is to be understood that the elements. of the loci; can be changed as ,to direction, for the principle of operation is" the same. However as the lock will ordinarily be used on, the right hand side,

I I have shown except in Figure l, and will describe my look as arranged for right .Referring now to these drawingslha've designated a hollow casing at 1 provided with? flanges 2 adapted to receivescrews 3 to secure the lock to a window or the like. Slidable within the. casing 1 is a bolt 4 having 'asloping.-eiid and provided with a downwardly extending portion 5. Disposed .within the bolt is a recess adapted to re ceive a detent having ashanlr 6,. a collar i portion 7 anda pointed end portion 8. Disposed between the part 7 and a shoulder in the bolt recess is a spiral spring 9 exerting pressure downwardly upon the detent. Shank 6 of the detent extends upwardly into a recess 10 in. the casing when the tiallyarc shaped portionforming its bottom is provided in the upper face of bolt 18 and is adapted to receive part 8 of the detent. A projecting portion engaging part 5 of the main bolt limits movement of bolt13 in one direction. I

Suitably pivoted to the casing as by screw 16 is a trip member comprising a socket 17 within which arm 18 having-a forked end carrying a friction roller haslimited movement. A spring 20 within socket 17 exerts pressure outwardly against the end of arm 18. Socket 17 has aportion 21 paralleling the main body and having a tapered. end adapted to engage a lug 22 on the extension 23 of the main bolt 4. A spring 2% exerts downward pressure on the arm 18 thus tending to keep part 21 in engagement with part 22 (Fig. 15).

It may be found desirable to provide a hook shaped part 2e suitably attached to the bolt 41 cooperating with a lur; 25 on the manually movable hea 26 riding in a slot 26 in the casing.

A pull chain 27 may also be pro'vic. ed being pivoted to supplemental bolt 13 through toggle links 28 and 29 with suitable connections. (Figs. 6 and 14.) A slot30 in bolt 4 allows the bolt 13 a limited movement under actuation of the pull chain 27.

A guard plate 31 protecting the bolt 1 may be used to prevent undersired manual retraction of this bolt when this part is in the locked position, as by burglars.

The operation or" the device is as follows:

Assume the parts as in Figure 9 with the bolt 4 advanced between projections 32 of a rack or the like upon the upper part of a window sash as in Figure 1. To lower the upper window the chain 27 is pulled which through its associated mechanism causes bolt 18 to be retracted. As this action proceeds the detent under action of its spring is forced into the recess 14, the shank 6 leaving the recess 10. Farther backward movement causes positive engagementof bolt 13 with 4 (Fig. 13) and when the limit of downward movement of the chain has been reached, the head of bolt 4. has cleared the projection 32.

At this extreme retracted position the ear 22 has passed over the part 21, which by action of its spring has been caused to move upwardly and interfere with further forward movement of the bolts. The window may now be freely lowered.

When the window reaches any desired position, a slight upward movementwill cause a partial rotation ofthe trip about without repeating this operation.

"the usual mental bolt 13 is moved forward followed by bolt 4. the sloping recess 1a in bolt l causing the detent to move upward until shank 6 is socketed in recess 10 in the easing. The window can not now be lowered The for ward movement of bolt i causes the pull chain to resume its initial position.

If it is desired to retain thebolts in retracted position, the head 26 may be moved to cause lug 25 to engagethe hook on part 24.

The sash may be raised at any time in manner, each projection first moving bolt 13 which allows the detent to fall from its socket in the casing, and bolt 4 to be retracted by further movement of the projection.

The guard plate 81efiectively prevents undesired tampering with the bolt from outside the'window asbyinserting an instrumentbetween the upper and lower windows.

.Vhat I claim is:

1. In combination in a look, a main bolt automatically lockable in extended and retracted positions, and a supplemental bolt controllingthe unlocking of the main bolt from both of its locked positions.

2. In combination with an upper and lower window sash, a lock carried by the lower sash for locking the upper sash, said lock having a casing, a main bolt for engage ment with the upper sash, said bolt having an entended locked position, a supplemental bolt engaging with said upper sash, and means operated by said supplemental bolt for releasing said main bolt from said locked position.

3., The apparatus of claim 2 with the addition of means in engagement with a window sash to release said main bolt from withdrawn locked position.

The apparatus of claim 2 with the addition of means for rendering said releasing means inoperable by said supplemental bolt.

5. The device of claim 1, said supplemental bolt being moved by said main bolt and independently reciprocable thereof.

6. The device of claim 1, said supplemental bolt beingreciprocable within and moved by said main bolt.

In testimony whereof I have ailixed my signature to this specification.

HERMAN i HEYER. 

